318412819 has 2 divisors, whose sum is σ = 318412820. Its totient is φ = 318412818.

The previous prime is 318412789. The next prime is 318412841. The reversal of 318412819 is 918214813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318412819 - 2⁷ = 318412691 is a prime.

It is a super-2 number, since 2×318412819² = 202773446607053522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318412019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159206409 + 159206410.

It is an arithmetic number, because the mean of its divisors is an integer number (159206410).

Almost surely, 2^318412819 is an apocalyptic number.

318412819 is a deficient number, since it is larger than the sum of its proper divisors (1).

318412819 is an equidigital number, since it uses as much as digits as its factorization.

318412819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 318412819 is about 17844.1256160116. The cubic root of 318412819 is about 682.8576532958.

The spelling of 318412819 in words is "three hundred eighteen million, four hundred twelve thousand, eight hundred nineteen".